upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/arch/sandbox/cpu/os.c

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/*
* Copyright (c) 2011 The Chromium OS Authors.
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <stdlib.h>
#include <termios.h>
#include <time.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <linux/types.h>
#include <asm/getopt.h>
#include <asm/sections.h>
#include <asm/state.h>
#include <os.h>
/* Operating System Interface */
ssize_t os_read(int fd, void *buf, size_t count)
{
return read(fd, buf, count);
}
ssize_t os_write(int fd, const void *buf, size_t count)
{
return write(fd, buf, count);
}
off_t os_lseek(int fd, off_t offset, int whence)
{
if (whence == OS_SEEK_SET)
whence = SEEK_SET;
else if (whence == OS_SEEK_CUR)
whence = SEEK_CUR;
else if (whence == OS_SEEK_END)
whence = SEEK_END;
else
os_exit(1);
return lseek(fd, offset, whence);
}
int os_open(const char *pathname, int os_flags)
{
int flags;
switch (os_flags & OS_O_MASK) {
case OS_O_RDONLY:
default:
flags = O_RDONLY;
break;
case OS_O_WRONLY:
flags = O_WRONLY;
break;
case OS_O_RDWR:
flags = O_RDWR;
break;
}
if (os_flags & OS_O_CREAT)
flags |= O_CREAT;
return open(pathname, flags, 0777);
}
int os_close(int fd)
{
return close(fd);
}
void os_exit(int exit_code)
{
exit(exit_code);
}
/* Restore tty state when we exit */
static struct termios orig_term;
static void os_fd_restore(void)
{
tcsetattr(0, TCSANOW, &orig_term);
}
/* Put tty into raw mode so <tab> and <ctrl+c> work */
void os_tty_raw(int fd)
{
static int setup = 0;
struct termios term;
if (setup)
return;
setup = 1;
/* If not a tty, don't complain */
if (tcgetattr(fd, &orig_term))
return;
term = orig_term;
term.c_iflag = IGNBRK | IGNPAR;
term.c_oflag = OPOST | ONLCR;
term.c_cflag = CS8 | CREAD | CLOCAL;
term.c_lflag = 0;
if (tcsetattr(fd, TCSANOW, &term))
return;
atexit(os_fd_restore);
}
void *os_malloc(size_t length)
{
return mmap(NULL, length, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
}
void os_usleep(unsigned long usec)
{
usleep(usec);
}
u64 os_get_nsec(void)
{
#if defined(CLOCK_MONOTONIC) && defined(_POSIX_MONOTONIC_CLOCK)
struct timespec tp;
if (EINVAL == clock_gettime(CLOCK_MONOTONIC, &tp)) {
struct timeval tv;
gettimeofday(&tv, NULL);
tp.tv_sec = tv.tv_sec;
tp.tv_nsec = tv.tv_usec * 1000;
}
return tp.tv_sec * 1000000000ULL + tp.tv_nsec;
#else
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec * 1000000000ULL + tv.tv_usec * 1000;
#endif
}
static char *short_opts;
static struct option *long_opts;
int os_parse_args(struct sandbox_state *state, int argc, char *argv[])
{
struct sb_cmdline_option **sb_opt = __u_boot_sandbox_option_start;
size_t num_options = __u_boot_sandbox_option_count();
size_t i;
int hidden_short_opt;
size_t si;
int c;
if (short_opts || long_opts)
return 1;
state->argc = argc;
state->argv = argv;
/* dynamically construct the arguments to the system getopt_long */
short_opts = os_malloc(sizeof(*short_opts) * num_options * 2 + 1);
long_opts = os_malloc(sizeof(*long_opts) * num_options);
if (!short_opts || !long_opts)
return 1;
/*
* getopt_long requires "val" to be unique (since that is what the
* func returns), so generate unique values automatically for flags
* that don't have a short option. pick 0x100 as that is above the
* single byte range (where ASCII/ISO-XXXX-X charsets live).
*/
hidden_short_opt = 0x100;
si = 0;
for (i = 0; i < num_options; ++i) {
long_opts[i].name = sb_opt[i]->flag;
long_opts[i].has_arg = sb_opt[i]->has_arg ?
required_argument : no_argument;
long_opts[i].flag = NULL;
if (sb_opt[i]->flag_short) {
short_opts[si++] = long_opts[i].val = sb_opt[i]->flag_short;
if (long_opts[i].has_arg == required_argument)
short_opts[si++] = ':';
} else
long_opts[i].val = sb_opt[i]->flag_short = hidden_short_opt++;
}
short_opts[si] = '\0';
/* we need to handle output ourselves since u-boot provides printf */
opterr = 0;
/*
* walk all of the options the user gave us on the command line,
* figure out what u-boot option structure they belong to (via
* the unique short val key), and call the appropriate callback.
*/
while ((c = getopt_long(argc, argv, short_opts, long_opts, NULL)) != -1) {
for (i = 0; i < num_options; ++i) {
if (sb_opt[i]->flag_short == c) {
if (sb_opt[i]->callback(state, optarg)) {
state->parse_err = sb_opt[i]->flag;
return 0;
}
break;
}
}
if (i == num_options) {
/*
* store the faulting flag for later display. we have to
* store the flag itself as the getopt parsing itself is
* tricky: need to handle the following flags (assume all
* of the below are unknown):
* -a optopt='a' optind=<next>
* -abbbb optopt='a' optind=<this>
* -aaaaa optopt='a' optind=<this>
* --a optopt=0 optind=<this>
* as you can see, it is impossible to determine the exact
* faulting flag without doing the parsing ourselves, so
* we just report the specific flag that failed.
*/
if (optopt) {
static char parse_err[3] = { '-', 0, '\0', };
parse_err[1] = optopt;
state->parse_err = parse_err;
} else
state->parse_err = argv[optind - 1];
break;
}
}
return 0;
}